Semi-sweet

Yesterday's mystery image was a used Gillette M3power razor cartridge at 200x. Here are two other views at 60x.




Today's mystery picture is actually going to be mystery pictures. Below are three different common sugar substitutes, ones you would find in any store or restaurant. All three are 200x. Your job is to guess which image (call them 1, 2 and 3 starting at the top) corresponds to which artificial sweetener.